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-,-~_ .<<'_ ,,,'.,....,,'.._.:,L~_..n _,,",.,:"'-X.. Important parts of this criteria include: (a) cons- traints and encumbrances, (b) incompatible uses (example: mineral rights outstanding), (c) effects that wilderness designation would have on adj acent lands, and (d) the need to intens i vely manage the area for sustained yield production of resources other than wilderness. Bureau of Land Management criteria for availability include: possible impacts of a wilderness designation on other resources, how the WSA would be managed if not designated as wilderness; and mineral resource values. a. Existing Constraints and Encumbrances. The patented lands, mostly mining claims, may have mineral values which would be affected by wilderness designation. Surface impacts and access needs could also reduce wilderness values. These are significant although about 490 acres can be excluded by a boundary modification. Activities on the unpatented m1n1ng claims are regulated by 36 CFR 228 and the effects on mineral values and wilderness would be similar to those of the patented lands. The mineral leasing applications may represent constraints on future management of the area. However, the extent of these constraints is unknown until a decision is made regarding issuance of the leases. The issuance of mineral leases will be affected by a wilderness designation, with less area available for leasing than under a nonwilderness allocation. Mineral exploration and development under the leasing program would affect wilderness values on parts of the WSAs. b. Incompatible Uses. The boundary can be modified to avoid some of the conflicts with existing non-compatible uses. The designation of the entire WSA as 93 r' r f)"" '. f') . v," , (.' t..